WATCH: AEK Fan Throws Firework Into Ajax End Before Champions League Match

The flare exploded in the supporters' section and appeared to leave several fans injured.

Tensions ran high prior to AEK Athens and Ajax's UEFA Champions League match Tuesday at Athens Olympic Stadium.

As fans traded vocal barbs, a man was pictured throwing a firework into the stands of visiting Ajax supporters.

Ajax-supporters worden bekogeld met vuurwerk #aekaja #ajax pic.twitter.com/hBUmTZbBHn

— Daniel Schoonenboom (@Schoonenboom) November 27, 2018

The flare set off an explosion. Several were photographed as being bloodied from the incident.

Frightening scenes as an AEK fan threw a flare into the rival fans' section before their Champions League clash. pic.twitter.com/GEaAc7rKPR

— Bleacher Report (@BleacherReport) November 27, 2018

Police were pictured entering the stands working to control the scene. The game still kicked off at its scheduled time despite the chaos, and Ajax had the last laugh, securing a 2-0 win that punched its ticket to the Champions League knockout stage for the first time in 13 years.